Satoshi wrote extensively about what he imagined Bitcoin could become, including in emails to me that I later published. Certainly, what was done to the original Bitcoin completely voided Satoshi's goals and offers an abject lesson in the difficulty of keeping institutions on-track over time.
Note that the same tactics that were used to wreck Bitcoin are now being deployed against Nix, as the open source community has struggled to learn the right lessons from Bitcoin.
> it makes perfect sense to me that that's the feature the market converged to
The market certainly didn't converge to that outcome. It was the result of relentless political scheming and psychological manipulation of a small number of people, combined with criminal tactics like DDoS attacks. The winners of that fight have then tried to retcon what happened as some sort of natural or obvious outcome, but then why did it require so much viciousness and illegal behaviour?
The market value of all cryptocurrencies seems to move in tandem, or at least did many years ago when I last cared about this topic. It reflects nothing more than the general hype and brand awareness around Bitcoin and crypto. Certainly a "store of value" that can't directly be used to purchase things is worthless, as any government that wishes to void that store of value and force users back into their own currencies can do so overnight by simple legal fiat.